Wheel.



UNITE STATE-S PATENT orrion.

JOHN THOMSON, OF NEW YORK, N. Y., ASSIGNOR TO TRlDEN'l TIRE COMPANY, OF NEl/V YORK, N. Y., A CORPORATION OF NEW YORK.

WHEEL.

Specification of Letters Patent.

Pa ented Nov. 27, 1906.

To all whom it may concern:

Be it known that I, J 011x Trionsox; a citizen of the United States, residing in the borough of Manhattan, city of New York, in the State of New York, have invented certain new and useful Improvements in lVheels, of which the following is a specification, reference being had to the accompanying drawings, forming a part hereof.

This invention relates particularly to provisions for protecting the tubular pneumatic tires of vehicle-wheels from injury.

' Metallic shields have been applied heretofore to the treads of pneumatic tires, such shields consisting in some cases of independent plates or segments and in other cases of continuous metallictreads.

It is the object of the present invention to improve the construction of protective devices of the class last referred to with a view particularly to the better protection of the pneumatic tire from injury by lateral thrusts and wrenches, as well'as by abrasive action and puncture.

A further object is to provide a shield which can be readily applied to any tire and at the same time capable of enduring the heavy punishment to which such tires are subjected.

The invention will be morefully explained hereinafter with reference to the accompanying drawings, in which it is illustrated, and in which Figure 1 is a partial view in side elevation, with parts broken away, of a wheel to which the present improvement is applied. Fig. 2 is a view, partly in edge elevation and partly in central section, of the wheel shown in Fig. 1. F ig, 3 is a detail view in transverse section and"on' a larger scale, illustrating particularly the means for securing together the shield-sections.

The invention is illustrated in the drawings as applied to a wheel a, which may be of ordinary construction, having a rim or felly 1) adapted to support a tubular pneumatic tire c, cylindrical in cross-section, the same being provided with a valved inflation-nipple d, projected through the wheel-rim b, as usual. The improved shield consists of two rigid metallic shield-sections e and f, which are secured together by bolts g, which pass through the tread portion of the two sections. One of such sect1ons is provided in its meeting l face with a circular channel f to receive a corres ending rib e, formed on the meeting face 0 the other shield-section e, sothat both shield-sections shall equally sustain all heavy shocks and strains delivered to either one, thus relieving the bolts 9 of all function other than that of maintaining the shield-sections in engagement sidewise. As shown particularly in Fig. 3, the head 9 of the bolt g is conical and the nut g", which is applied to the other end of the bolt, is also conical, such head. and nut engaging correspondingly-tapered seats in the shield-sections. The conical surfaces of the head and nut bite very intimately the seats-formed therefor in the shield-sections, and therefore prevent the accidental loosening of the bolts by vibration,

while yet the bolts can be readily disengaged and withdrawn whenever necessary.

The two shield-sections, as will be observed upon reference to Figs. 2 and 3 of the drawings, form a shield which extends inward beyond the middle of the pneumatic tire and fits the same snugly in a plane of its greatest width, while between these points and the tread portions, where the shield bears upon the outer face of the pneumatic tire, there is provided space, as at h, into which the tire '0 may flow or expand as it is distorted under pressure. By extending the shield inward beyond the middle plane of thepneumatic tire the latter is steadied and supported in such a manner 'as to better enable it to resist said thrusts and the wrenching strains, while through the close engagement of the shield with the tire at the sides dirt and grit may be excluded from the space between the pneumatic tire and the shield. Furthermore, the practical incasing of the pneumatic tire, except at the narrow zones between the rim 1) and the edges of the shield, supports the tire at all points, and therefore permits the tire to 1 be used satisfactorily, although infiatedto a less degree than usual,-whereby the tire may be less heavily constructed without sacrificdurability.

claim as my invention- 1. The combination with a pneumatic tire for vehicles, of a rigid metallic shield which is extended inwardly beyond the middle plane of the pneumatic tireand bears snugly against the sides thereof and comprises two circumferentially separable sect1ons and means for securing-said sections together,

said shield being formed to provide spaces becircumferentiallyseparable sections, one of for vehicles, of a, rigid metallic shield which is extended inwardly beyond the middle plane tween the side bearings and the tread porl pneumatic tion into which the pneumatic tire may flow l of the tire and bears a snugly when distorted under pressure, substantially l against the sides thereof and comprises two as described. circumferentially separable sections, and 2. The combination with a pneumatic tire l bolts and nuts to secure said sections together for vehicles, of a rigid metallic shield which is l the bolt-heads and the nuts being conical to extended inwardly beyond the middle plane I engage corresponding seats in the shield-secof the pneumatic tire and bears snugly tions, substantially as described.

against the sides thereof and comprises two this 15th day of September, 1905.

said sections having in its meeting face a circular channel and the other a rib to enter the JOHN THOMSON same, and means to secure the said sections together, substantially as described.

3. The combination with a pneumatic tire In presence of THOMAS J. CANTY, Wt B. GREELEY.

This specification signed and witnessed 

